67642090 has 32 divisors (see below), whose sum is σ = 128880000. Its totient is φ = 25489728.

The previous prime is 67642073. The next prime is 67642097. The reversal of 67642090 is 9024676.

It is not an unprimeable number, because it can be changed into a prime (67642097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36916 + ... + 38704.

It is an arithmetic number, because the mean of its divisors is an integer number (4027500).

Almost surely, 2^67642090 is an apocalyptic number.

67642090 is a deficient number, since it is larger than the sum of its proper divisors (61237910).

67642090 is a wasteful number, since it uses less digits than its factorization.

67642090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 67642090 is about 8224.4811386494. The cubic root of 67642090 is about 407.4481397363.

The spelling of 67642090 in words is "sixty-seven million, six hundred forty-two thousand, ninety".